Type-writing machine



l UNTTED STATES n PATENT QFFICE.

ALLISON TEMPLETON, OF GALVESTON, TEXAS.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent NO. 580,741, dated April 13, 1897.

Application filed November 2'7, 1896. Serial No. 613 ,504. (No model.)

l citizen of the United States, residing at Galveston, in the county of Galveston and State of Texas, have invented a certain new and useful Improvement in Automatic Type-Writin g Machines, of which the following is a specification.

My present invention relates to a new and useful improvement in automatic type-writing machines, and has for its object to provide a simple and effective mechanism for automatically operating the type-bars of such a machine under the control of the keys in such manner as to require but light action of said keys.

With these ends in view this invention consists in the details of construction and combination of elements hereinafter set forth and then specifically designated by the claims.

In order that those skilled in the art to which this invention appertains may understand how to make and use the same, the construction and operation will now be described in detail, referring to the accompanying drawings, forming a part of this specification, in which- Figure lis a diagrammatical view of the Operating mechanism of a type-writing machine, showing two keys and the bars controlled thereby; Fig. 2, a fragmental view of said mechanism, showing the segmental wheel in one of the positions assumed thereby during the operation of the mechanism; and Fig. 3, a section of this wheel at the line Fig. 4 is a sectional view of, the roll, illustrating the application of the corrugations and teeth.

In carrying out my invention as here em- -bodied I arrange a roll A upon a constantlyrevolving shaft B, which may receive its motion from any suitable source of power outside of the operator, and while I have here shown this roll as having a smooth periphery said periphery may be either corrugated or have teeth or projections formed therewith, as may be found most desirable. A series'of levers C are arranged upon each side of this roll and are pivoted at D to the base or other.

portion of the framework of the machine, and to the upper ends of these levers are journaled the segmental wheels E, each of which has a portion of its periphery out away, so

that when moved into contact with the roll ed to the vertical bars of the bell-crank levers i H, which latter have connected to their horizontal bars the key-Shanks I, carrying the keys .I at their upper ends. Springs K are attached to the arms F in such manner as to retract the same after they have been forced forward, while springs L are attached to the levers C, so as to partly overcome the tension of the springs K, thus leaving the levers C and bars carried thereby in partial equilibrium. From this it will be seen that when a key is depressed the bell-crank lever to which it is attached will force the arm F inward, releasing the lever C and permitting it to move inward by the action of the spring L, .and this inward movement of the lever will carry the wheels E into contact with the roll, causing them to revolve, as before described.

A series of levers M are pivoted at N, so that their outer ends may swing downward, and they are here shown as alternately eX- tending in opposite directions, so as to economize space and adapt them for the operation of the type-bars; and these levers are connected by the pitmen O to the segmental wheels E in such manner that when these wheels are revolved the levers will be drawn downward. During each movement the typebars P will be 'swung upward by the action therebetween and the levers through the rods Q, said rods having slots R formed in their lower ends, which engage the pins S, projecting from the levers. The springs T, secured to the cross-bar U, serve to return the levers M to their normal position after being depressed. From this description it will be obvious that when the key is depressed and the segmental wheel E brought into contact with the revolving roll A said wheel will be revolved until the periphery of the wheel passes out of engagement with said roll, during which time the pitman O will have been carried IOO downward around the center of the wheel to the opposite side thereof, so that lsaid wheel will be continued' in its rotary motion from the position shown in dotted lines in Fig. 2 to the position shown in full lines in this figure by the action of the spring 'I upon the lever M. At this point the pin V, projecting from the side of the segmental wheel, will come in contact with the stop W, supported bythe frame and arms, and arrest the movement of the wheel, during which movements the type-bar will have been swung upward and theA type carried thereby thrust against the carriage-roll and returned to its normal position. Now when the key is released the lever C will return to its normal position, thus freeing the pin V from the stop W and permitting the spring T to revolve the segmental Wheel from the position shown in full lines in Fig.v 2 to the position shown in Fig. l, after which it is ready for further operation. This arrangement will permit of a constantly rapid movement of the type-bars, since the power applied thereto is transmitted through the roll A, and this may be revolved by an electric or other motor, so that it requires onlya slight touch of the keys to bring the segmental wheels into contact with the roll to produce operations of the machine. The wheels E upon the rear side ofthe roll A are journaled to thclinks Y, in order that they maybe acted upon in the same manner by the roll as those upon the front side thereof, and the levers C, which swing these wheels, are. loosely connected thereto.

I doA not wish to be understood as limiting myself to the exact design here shown, as I have onlyillustrated this mechanism to showA how my improvement may be embodied, since it isobvious that the details of construction may vary to a considerable extent without departing from thespiri-t of my invention.

Having thus fully described my invention, whatl claim as new and useful is- 1. In an automatic type-writer, a constantlyrevolving roll, a series of wheels adapted to be revolved by said roll, means for putting said wheels into contact therewith, means for carrying said wheels out of contact therewith,

and mechanism dependent upon said wheels for the operation of the type-bar, as specified; 2. In an automatic type-writing machine, a constantly-revolving roll, a series of segmental wheels adapted to be revolved by said roll, key mechanism for putting said wheels into contact with the roll, and mechanism dependent upon said wheels for actuating the type-bars as specified.

3. In an automatic type-writing machine, a constantly-revolving roll, a series of segmental wheels, means for putting said wheels into contact with the roll, levers connected by pitmen to said wheels, and type-bars connected by rods to said levers, substantially as and for the purpose set forth.

4. In an automatic type-writing machine, a constantly-revolving roll, a series of wheels arranged upon each side of said roll, levers to which said wheels are journaled, keys and connections for operating said levers, pitmen pivoted to said wheels, levers to which said pitmen are attached, and type-bars under the control of the last-named levers, substantially as and for the purpose set forth.

5. The herein-described combination of a constantly-revolving roll, a series of segmental wheels, a series of levers to which said wheels are journaled, pins projecting from the wheels, stops for arresting the movement of said pins, springs for giving the levers an inward tendency, arms connected to said levers, springs for returning said arms to their ALLISON TEMPLETON.

Witnesses:

S. S. WILLIAMSON, W. L. Moon, Jr. 

